package net.youball.utils;

import javax.servlet.http.HttpServletRequest;

public class IpUtil {

	public static String getIp(HttpServletRequest request){
		String ip = request.getHeader("X-REAL-IP");  

        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip))  
        {  
       	ip = request.getHeader("x-forwarded-for"); 
        }
	    if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
	        ip = request.getHeader("Proxy-Client-IP");  
	    }  
	    if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
	        ip = request.getHeader("WL-Proxy-Client-IP");  
	    }  
	    if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
	        ip = request.getRemoteAddr();  
	    }  
	    return ip;
		
	}
}
